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[10/17,SRU,OEM-OSP1-B] thunderbolt: Correct path indices for PCIe tunnel

Message ID 20191001124610.10587-11-vicamo.yang@canonical.com
State New
Headers show
Series thunderbolt: ICL support | expand

Commit Message

You-Sheng Yang Oct. 1, 2019, 12:46 p.m. UTC 
From: Mika Westerberg <mika.westerberg@linux.intel.com>

BugLink: https://bugs.launchpad.net/bugs/1844680

PCIe tunnel path indices got mixed up when we added support for tunnels
between switches that are not adjacent. This did not affect the
functionality as it is just an index but fix it now nevertheless to make
the code easier to understand.

Reported-by: Rajmohan Mani <rajmohan.mani@intel.com>
Fixes: 8c7acaaf020f ("thunderbolt: Extend tunnel creation to more than 2 adjacent switches")
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Yehezkel Bernat <YehezkelShB@gmail.com>
(cherry picked from commit ce19f91eae43e39d5a1da55344756ab5a3c7e8d1)
Signed-off-by: You-Sheng Yang <vicamo.yang@canonical.com>
---
 drivers/thunderbolt/tunnel.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/thunderbolt/tunnel.c b/drivers/thunderbolt/tunnel.c
index 91d7e00516b4..5506dec3e22f 100644
--- a/drivers/thunderbolt/tunnel.c
+++ b/drivers/thunderbolt/tunnel.c
@@ -112,7 +112,7 @@  struct tb_tunnel *tb_tunnel_alloc_pci(struct tb *tb, struct tb_port *up,
 		return NULL;
 	}
 	tb_pci_init_path(path);
-	tunnel->paths[TB_PCI_PATH_UP] = path;
+	tunnel->paths[TB_PCI_PATH_DOWN] = path;
 
 	path = tb_path_alloc(tb, up, TB_PCI_HOPID, down, TB_PCI_HOPID, 0,
 			     "PCIe Up");
@@ -121,7 +121,7 @@  struct tb_tunnel *tb_tunnel_alloc_pci(struct tb *tb, struct tb_port *up,
 		return NULL;
 	}
 	tb_pci_init_path(path);
-	tunnel->paths[TB_PCI_PATH_DOWN] = path;
+	tunnel->paths[TB_PCI_PATH_UP] = path;
 
 	return tunnel;
 }